7 rules to follow online, according to an etiquette expert

Facebook, Venmo, and Tinder launched less than a decade ago, but since their inception, unspoken rules about proper "netiquette" have changed radically.

Tech Insider consulted online etiquette expert Daniel Post-Seining for some tips. He's the great-great-grandson of Emily Post, the longtime publisher of etiquette guides and author of "Manners in a Digital World."

From heated political debates on Facebook to messaging Tinder matches, here's how Post-Senning says we can all get along better online.

When it's okay to break up through text:

You can only go the text message route it if you're in the beginning stages of the relationship, he says. Etiquette is about honoring a relationship based on a mutual set of emotional expectations. If the majority of your interactions have happened over text and you've gone on less than five dates with them, a text will suffice.

In that circumstance, if a person you're not interested in asks for a follow-up date, try something like: "I'm glad we've had the chance to go out, but I'm not interested. Thanks for asking."

When ghosting is acceptable:

But Post-Senning says there's one instance in which it might be okay: when you both decide to ghost at the same time.

"Sometimes if it's a mutual ghosting, it can be nice to let the relationship fade away," he says.

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How to get matches on Tinder:

Crafting an attractive Tinder profile is an art form.

If your Tinder game hasn't been so hot recently, Post-Senning says to follow these tips: post photos that actually look like you, reply within a few hours, and message your match something clever and specific to what they wrote on their profile.

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When to request money on Venmo:

You can request payments from your friends on Venmo (no matter how small the amount) — but asking for money can feel uncomfortable.

The golden rule of Venmo is to give your friends an opportunity to pay you back before you request it, Post-Senning says. On the flip side, if you borrowed money, you should pay that person back before they have to ask you.

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How to debate politics on Facebook:

Presidential election season in the US is officially in full swing, which means plenty of Facebook posts (and arguments) about Trump and Clinton are inevitable.